I'd compare the facilities for passengers in an M5000 and a pacer to be around the same. Both have very uncomfortable seating and both offer shockingly poor ride quality. Both rely on natural ventilation which makes them very unpleasant on days like today. Actually they're very similar as far as facilities go!
An M5000 is fully accessible and isn't designed to cater for long journeys that pacers can be used on, which is what makes their basicness acceptable.
I agree with what I think Moonshot is getting at about the service though. A tram is very cheap to run and perfectly safe without a guard. Metrolink doesn't need any staff in ticket offices or to help people board or alight - but they do still have some roving staff to assist and do revenue. The model works as far as that goes because the whole thing is so cheap to operate that it can charge high fares and make an operating profit, even with very frequent services. It's good, but because of the planning system in this country the stock that has been ordered is seriously deficient (if it had been known that 116 vehicles were going to be required, then the economies of scale would have been large enough to have a nice bespoke tram well suited to the city, but as the original tender was only for 8 vehicles due to no funded extensions at the time, we got a substandard off-the-shelf design). Compare this to the story of the 700 - much maligned and delayed, but what comes out at the end will at least do the job it has been designed exactly to do!
Now to the integration. I have explained this before many times on this forum, specifically I have explained it to Moonshot twice now. I am not going to do so again after this.
Prior to conversion of the Bury, Altrincham and Oldham-Rochdale lines there was a through-ticket and a guarantee of through service to people travelling from those stations to anyone travelling to any national rail station in the whole country. Oldham to Edinbrugh, for example, was a journey someone I know made recently. Back then, you'd get a reserved train from Manchester and a local connection. If you bought an Advance ticket and the Oldham - Manchester train were late, it would be OK to get a later train from Manchester to Edinburgh at no charge. Now, if there is a delay to a Metrolink service that results in you missing your booked train to Edinburgh, you will lose everything. You won't get more than the cost of the tram ticket back from Metrolink - and that's if you get anything at all, they aren't obliged to give you anything. You will not get a refund on your Manchester to Edinbrugh ticket and you will not be allowed to travel, so you will have to pay for a new ticket to Edinburgh or abandon your trip - does that sound good?
It applies to any and all journeys to and from stations outside the GM area, and sometimes within it. If your national rail train to Manchester from anywhere is late and you miss the last available tram back to Oldham, you will have to pay for your taxi yourself - or walk the many miles at night. If you bought a ticket, advance or no, from anywhere to Oldham back before it's conversion you would have the guarantee of service right through, no matter how late the train to Manchester was. The loss of these guarantees is the great travesty of Metrolink, it significantly increases journeytimes because people have to leave massive contingency time to avoid the risk of missing a Booked Train.
Can somebody please tell me they understand this?