I would strongly suggest to change the seat of arbitration to either New York or London if you want to convince companies to trust this service. Both places are preferred by companies worldwide to settle international disputes.

Very interesting to hear that about New York. Are international disputes an exception to the general preference for Delaware?

The seat of arbitration and the choice of law are two different things. Parties prefer London or New York for all challenges related to the arbitration process (stay the hearing, challenge the award, etc) but this does not exclude the actual arbitration from applying Delaware law.