I struggle to see what Tottenham would gain from any ESL because they'd be competing with even more money-doped clubs, meaning they'd likely have even less chance of winning a trophy and could find themselves regularly battllng just to finish in the top half of the table.
From a football point of view not a lot. However I guess Daniel/Joe had to get onboard to protect their asset. If it had gone ahead and been a success then suddenly THFC would be worth less and in the long run revenues might decline as TV money is diverted to ESL rather than PL.