The difficulty for TFL is that changing the pension scheme is going to be seriously problematic.
Do anything which is detrimental to existing members (in other words current employees) and this will - justifiably in my view - be seen as a major movement of goalposts, which to me would result in a total breakdown in trust between employer and employees. TFL’s employee relations are already bull-in-china-shop. Not great to do something which will make this several orders of magnitude worse.
To add to this, despite large numbers of applicants relative to posts, TFL is now struggling to recruit and retain quality people, to the point where they are at the point of scraping the barrel even to get people who can fulfil basic requirements in terms of communications and reading/writing. Even in basic roles (which are safety critical) this is a problem, but massively more so for the more specialised ones such as controller. I know from reliable sources that from the recent controller recruitment exercise alone, a role where there’s already significant unfilled vacancies and a tsunami of retirements approaching, a significant number of successful candidates went on to fail the training. In short, TFL is reaching the point where they are uncompetitive as an employer in respect of getting the people they need. Mess around with the pension and this problem will become *far* worse.
Changing the pension for new joiners might be feasible in the short term (albeit doesn’t help with the recruitment problem), but over time will lead to a toxified atmosphere.
Johnson is too short term and simple to appreciate these issues, and with him having his well known “punish London for voting Labour / Khan” agenda he doesn’t care anyway. It might come back to bite him if he loses Uxbridge though, again he’s probably too belligerent to have thought of that, he probably thinks they will vote him in come what may because they love Boris. My (staunch Conservative) area at home - in the south east not London - has just had a by election where there was a significant swing to the Lib Dems. This is part of a pattern seen a few times now. Johnson losing Uxbridge is a very real possibility.