I think monetary stability is priority for ECB so whoever the successor no chance for allowing Bitcoin to intervene in the traditional Euro currency. But we hope whoever is elected is dovish eventhough does not necessarily result in more relaxed policies. As a bitcoin investor, we should put more attention in the direction of monetary policy, liquidity, and the policy of central bank regarding issues surrounding debt, inflation, and the stability of the financial system.
That depends on the next ECB president if he/she will be able to balance bitcoin regulations with the existing traditional Euro currency. At least we need to have someone filling up the position who is more enthusiastic about bitcoin and is more open on the possibilities that bitcoin will be accepted by the people as another alternative currency for bitcoin.
However, bitcoin may not bring any monetary stability, and that's a fact. But if people wants bitcoin which then be a threat to European monetary sovereignty, maybe this is the time where they will launch the digital euro to compete with digital bitcoin.